--- ./base/check.h.orig
+++ ./base/check.h
@@ -85,7 +85,7 @@ class BASE_EXPORT CheckError {
   // Stream for adding optional details to the error message.
   std::ostream& stream();
 
-  NOMERGE ~CheckError();
+  ~CheckError();
 
   CheckError(const CheckError& other) = delete;
   CheckError& operator=(const CheckError& other) = delete;
diff --git a/base/compiler_specific.h b/base/compiler_specific.h
index 14a5d6870df43..fa961b0cee1af 100644
--- ./base/compiler_specific.h.orig
+++ ./base/compiler_specific.h
@@ -340,11 +340,4 @@ inline constexpr bool AnalyzerAssumeTrue(bool arg) {
 
 #endif  // defined(__clang_analyzer__)
 
-// Use nomerge attribute to disable optimization of merging multiple same calls.
-#if defined(__clang__) && __has_attribute(nomerge)
-#define NOMERGE [[clang::nomerge]]
-#else
-#define NOMERGE
-#endif
-
 // Marks a type as being eligible for the "trivial" ABI despite having a